How to cook Vietnamese Crepes

Pancakes:
 
150g Rice flour
300ml Cold water
300ml Coconut milk
1/2 teaspoon Salt
1/4 teaspoon Turmeric
1 tablespoon Vegetable oil
300g Bean sprouts
2 Spring onions (scallions), finely chopped
180g Fresh mushrooms, thinly sliced
625ml Nuoc Cham